While working on my AR application I noticed the landscape often "flicked" at first I thought this was a sensor issue, but dismissed that after I found the problem is still there even with a completely static set of co-ordinates.Heres a video of the problem;

Most likely a threading issue. Rendering and manipulation of the camera are most likely taking place in different threads, which isn't a good idea. Either synchronize this part with the rendering or (and better) just let the sensor update set some flags and do the actual operations based on this flags in the rendering thread.